Recirculating system on 100HP Chrysler and puddle drain

[pnwboat]

Re: Recirculating system on 100HP Chrysler and puddle drain

Red arrow is pointing to the vacuum hose between the carb mounting bases referenced as #34 in the post above.

 

[MickLovin]

Re: Recirculating system on 100HP Chrysler and puddle drain

I would find it surprising that the hose isn't there and he wouldn't notice it as the nipples for this are rather big openings and surely you would want to know why they aren't plugged or why they haven't a hose on them, but this is also part of the recirculating system, so how would this make it idle to high,(surely they wouldn't be left open) My thoughts of that hose was to even out the excess from the carbies? This is done via the flanges that the carbies mount on and which the hose you refer to is attached. It would be a major leak, they do idle down some when put into gear, and I had the same problem with mine with it over revving, aha I did have a pump diaphram with cracks in it too. May I ask, if you unscrew the idle screw so that the cam isn't contacting the roller of the carbies, does it still idle high, or is it adjusting from your idle screw. I am not sure and hopefully someone can chime in here, but if it was to still idle with the idle screw fully out, it would mean fuel is bypassing the carbies via the fuel pump diaphram. Didn't check your past posting, but you have probably already checked your pump diaphragm. FRANK! we need you :facepalm:

 

[MickLovin]

Re: Recirculating system on 100HP Chrysler and puddle drain

Ok sorry but I just read your previous post about the pipe between the flanges, if this is clogged, it could cause a leak as I believe excess petrol is sucked from one to the other, and if it is clogged, it may have a crack/break and leaking through that, which will definately lean out your mixture. Check your hose, clean it out and let us know if that helps at all.

 

[Frank Acampora]

Re: Recirculating system on 100HP Chrysler and puddle drain

AHHH---It took me a little while to ruminate and go back to your particular engine! When you set the timing, did you retighten the distributor belt? If the belt is too tight, the distributor will not return to base timing and the engine will idle high. Sometimes it will also cause problems shifting into and out of gear.

Check to see that the belt has about 1/8 to 3/16 deflection when pushed in the center with an .010 feeler gauge before the gauge bends. I don't remember if I covered this in the video.

ALSO check the spring loaded throttle cable quick-connect. If it is not pulled out about 1/4 inch at idle, again, the timing tower will not return to idle and the engine will idle high. Then, because you have not set the idle stop screw correctly, it will idle too low in gear.

The three cylinder engines do not have balancing hoses. The carb balancing circuits are cast into the manifold. These are the square runs on the sides of the manifold. There is a hose from the airbox to the base of the manifold. However, the fitting is metered and even if the hose is disconnected or missing, or even clogged, it will not affect idle speed

 

[pnwboat]

Re: Recirculating system on 100HP Chrysler and puddle drain

I After re-reading I see that esimmons92 was referring to a 3 cylinder 1979 75HP. I was confused because it was attached to MickLovin's post which is titled 1979 100Hp which is a 4 cylinder.

 

[MickLovin]

Re: Recirculating system on 100HP Chrysler and puddle drain

Maybe a new thread should have been started, and Frank must have heard my call He has good ears you know, even in Canada he can hear me shouting for him LOLOL

 

[esimmons92]

Re: Recirculating system on 100HP Chrysler and puddle drain

AHHH---It took me a little while to ruminate and go back to your particular engine! When you set the timing, did you retighten the distributor belt? If the belt is too tight, the distributor will not return to base timing and the engine will idle high. Sometimes it will also cause problems shifting into and out of gear.

Check to see that the belt has about 1/8 to 3/16 deflection when pushed in the center with an .010 feeler gauge before the gauge bends. I don't remember if I covered this in the video.

ALSO check the spring loaded throttle cable quick-connect. If it is not pulled out about 1/4 inch at idle, again, the timing tower will not return to idle and the engine will idle high. Then, because you have not set the idle stop screw correctly, it will idle too low in gear.

The three cylinder engines do not have balancing hoses. The carb balancing circuits are cast into the manifold. These are the square runs on the sides of the manifold. There is a hose from the airbox to the base of the manifold. However, the fitting is metered and even if the hose is disconnected or missing, or even clogged, it will not affect idle speed

At first I did not tighten the distributor belt, however I did eventually tighten it (not too tight), and there was no difference in performance.

So with the hose from the base of the manifold being clogged should I see any difference next time I run it since it is now unclogged?

ALSO check the spring loaded throttle cable quick-connect. If it is not pulled out about 1/4 inch at idle, again, the timing tower will not return to idle and the engine will idle high. Then, because you have not set the idle stop screw correctly, it will idle too low in gear.

Sorry... I am not sure what you are referring to as "spring loaded throttle cable quick-connect"

 

[esimmons92]

Re: Recirculating system on 100HP Chrysler and puddle drain

I After re-reading I see that esimmons92 was referring to a 3 cylinder 1979 75HP. I was confused because it was attached to MickLovin's post which is titled 1979 100Hp which is a 4 cylinder.

Maybe a new thread should have been started, and Frank must have heard my call He has good ears you know, even in Canada he can hear me shouting for him LOLOL

Sorry, I posted on this one because it is about a recirculating system. Though motors are slightly different I thought it would fit the topic. LOL well it got a bit off the specific topic and I will contact an admin about getting all associated posts broken off into a new thread.

 

[Frank Acampora]

Re: Recirculating system on 100HP Chrysler and puddle drain

This needs to be adjusted on the cable so that the center portion, where the cable screws in, is pulled out about 1/4 inch past closed position at idle.

In these photos, the engine is NOT in neutral and the center portion is fully retracted.

You will probably see no difference with the hose unclogged.